[R] Query: how to modify the plot of acf

[Gabor Grothendieck]

Try this.  It uses Matthias' trick for getting rid of lag 1.
The it defines a new local plot.acf
 and then
defines a new local plot.acf which


# test data
set.seed(1)
x <- rnorm(1000)

# run acf
x.acf <- acf(x)

# remove lag 0 -- see Matthias' post
x.acf$acf[1] <- NA

# plot with custom x axis
plot(x.acf, xaxt = "n")
axis(1, seq(12, length(x.acf$acf), 12))





On 8/18/06, Stefano Sofia <stefano.sofia at regione.marche.it> wrote:
> I need to modify the graph of the autocorrelation. I tried to do it through plot.acf but with no success.
>
> 1. I would like to get rid of the lag zero
> 2. I would like to have numbers on the x-axis only at lags 12, 24, 36, 48, 60, ...
>
> Could anybody help me in this?
>
> Any help will be appreciated
> Thank you for your attention
> Stefano
>
>
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